54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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/* xz_stream.h - Definitions for handling the .xz file format */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This file is based on code from XZ embedded project
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* http://tukaani.org/xz/embedded.html
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*/
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#ifndef XZ_STREAM_H
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#define XZ_STREAM_H
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/*
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* See the .xz file format specification at
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* http://tukaani.org/xz/xz-file-format.txt
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* to understand the container format.
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*/
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#define STREAM_HEADER_SIZE 12
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#define HEADER_MAGIC "\3757zXZ\0"
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#define HEADER_MAGIC_SIZE 6
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#define FOOTER_MAGIC "YZ"
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#define FOOTER_MAGIC_SIZE 2
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/*
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* Variable-length integer can hold a 63-bit unsigned integer, or a special
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* value to indicate that the value is unknown.
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*/
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typedef uint64_t vli_type;
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#define VLI_MAX ((vli_type)-1 / 2)
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#define VLI_UNKNOWN ((vli_type)-1)
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/* Maximum encoded size of a VLI */
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#define VLI_BYTES_MAX (sizeof(vli_type) * 8 / 7)
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#endif
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